Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Quais rodadas a equipe Walther participou?
 ###Tabelas: CREATE TABLE list_by_the_world_health_organization_2011 (list_by_the_world_health_organization_2011_id AUTO_INCREMENT PRIMARY KEY, Overall rank INT, Country VARCHAR, Overall life expectancy INT, Male life expectancy INT, Male rank INT, Female life expectancy INT, Female rank INT) CREATE TABLE albums (albums_id AUTO_INCREMENT PRIMARY KEY, Album title VARCHAR, Format VARCHAR, Year INT, Original label VARCHAR, Chart positions VARCHAR) CREATE TABLE teams_and_drivers (teams_and_drivers_id AUTO_INCREMENT PRIMARY KEY, Team VARCHAR, Chassis VARCHAR, Engine VARCHAR, Driver(s) VARCHAR, Sponsor(s) VARCHAR, Rounds VARCHAR) CREATE TABLE aluminium_series_1964_onwards (aluminium_series_1964_onwards_id AUTO_INCREMENT PRIMARY KEY, Denomination VARCHAR, Metal VARCHAR, Weight VARCHAR, Shape VARCHAR, Size VARCHAR) CREATE TABLE year_by_year_performance (year_by_year_performance_id AUTO_INCREMENT PRIMARY KEY, Coach VARCHAR, Season VARCHAR, Record VARCHAR, Home VARCHAR, Away VARCHAR, Win % INT, Average (Total) Home Attendance VARCHAR)  
SELECT Rounds FROM teams_and_drivers WHERE Team = walther